This study examined the role of three personal resources (self-efficacy, organizational-based self-esteem, and optimism) in the Job Demands-Resources (JD-R) model. The authors hypothesized that personal resources (1) moderate the relationship between job demands and exhaustion, (2) mediate the relationship between job resources and work engagement, and (3) relate to how employees perceive their work environment and well-being. Hypotheses were tested among 714 Dutch employees. Results showed that personal resources did not offset the relationship between job demands and exhaustion. Instead, personal resources mediated the relationship between job resources and engagement/exhaustion and influenced the perception of job resources. The implications of these findings for the JD-R model are discussed.

The study was conducted among 163 employees, who were followed-up over a period of 18 months on average. Results of structural equation modeling analyses supported our hypotheses. Specifically, we found that T1 job and personal resources related positively to T2 work engagement. Additionally, T1 work engagement related positively to T2 job and personal resources. The model that fit best was the reciprocal model, which showed that not only resources and work engagement but also job and personal resources were mutually related. These findings support the assumption of Conservation of Resources theory that various types of resources and well-being evolve into a cycle that determines employees' successful adaptation to their work environments.

This study of 805 Finnish teachers working in elementary, secondary, and vocational schools tested 2 interaction hypotheses. On the basis of the job demands-resources model, the authors predicted that job resources act as buffers and diminish the negative relationship between pupil misbehavior and work engagement. In addition, using conservation of resources theory, the authors hypothesized that job resources particularly influence work engagement when teachers are confronted with high levels of pupil misconduct. In line with these hypotheses, moderated structural equation modeling analyses resulted in 14 out of 18 possible 2-way interaction effects. In particular, supervisor support, innovativeness, appreciation, and organizational climate were important job resources that helped teachers cope with demanding interactions with students.

This study investigates how daily fluctuations in job resources (autonomy, coaching, and team climate) are related to employees' levels of personal resources (self-efficacy, selfesteem, and optimism), work engagement, and financial returns. Forty-two employees working in three branches of a fast-food company completed a questionnaire and a diary booklet over 5 consecutive workdays. Consistent with hypotheses, multi-level analyses revealed that day-level job resources had an effect on work engagement through day-level personal resources, after controlling for general levels of personal resources and engagement. Day-level coaching had a direct positive relationship with day-level work engagement, which, in-turn, predicted daily financial returns. Additionally, previous days' coaching had a positive, lagged effect on next days' work engagement (through next days' optimism), and on next days' financial returns.Why do some employees perform at high levels, whereas others perform at minimum levels of acceptance? And why do those who generally perform well have off-days? The first question reflects between-person differences in explaining job performance, whereas the second question encapsulates the issue of within-person fluctuations. Theoretical models and empirical studies concerning between-person differences mainly examine how employees' traits or general tendencies determine their performance

This diary study investigated whether and how supervisors' leadership style influences followers' daily work engagement. On the basis of leadership theories and the job demands-resources model, we predicted that a transformational leadership style enhances employees' work engagement through the mediation of self-efficacy and optimism, on a day-to-day basis. Fortytwo employees first filled in a general questionnaire, and then a diary survey over five consecutive workdays. The results of multilevel analyses offered partial support for our hypotheses. Daily transformational leadership related positively to employees' daily engagement, and day-levels of optimism fully mediated this relationship. However, daily self-efficacy did not act as a mediator. These findings expand theory and previous research by illuminating the role of transformational leaders in fostering employee work engagement.